Advertisements
Advertisements
Question
Find the surface area of a cube whose edge is 27 cm.
Advertisements
Solution
\[\text { Edge of the a cube = 27 cm }\]
\[ \therefore \text { Surface area of the cube = 6 }\times \text { (side ) }^2 = 6 \times (27 )^2 = 6 \times 729 = 4374 {cm}^2 \]
RELATED QUESTIONS
If each edge of a cube is doubled, how many times will its surface area increase?
Find the volume of a cube whose side is 25 mm .
Find the volume in cubic decimetre of the cube whose side is 1.5 m.
A beam 5 m long and 40 cm wide contains 0.6 cubic metre of wood. How thick is the beam?
The dimensions of a metal block are 2.25 m by 1.5 m by 27 cm. It is melted and recast into cubes, each of the side 45 cm. How many cubes are formed?
Find the surface area of a cube whose edge is 2.1 m.
Two cubes, each of volume 512 cm3 are joined end to end. Find the surface area of the resulting cuboid.
The dimensions of a solid metallic cuboid are 72 cm × 30 cm × 75 cm. It is melted and recast into identical solid metal cubes with each edge 6 cm. Find the number of cubes formed.
Also, find the cost of polishing the surfaces of all the cubes formed at the rate Rs. 150 per sq. m.
The ratio between the lengths of the edges of two cubes is in the ratio 3: 2. Find the ratio between their:
(i) total surface area
(ii) volume.
If the length of the diagonal of a cube is `6sqrt(3)` cm, then the length of the edge of the cube is 3 cm.
